1011101221200 has 180 divisors, whose sum is σ = 3767693524800. Its totient is φ = 231108837120.

The previous prime is 1011101221199. The next prime is 1011101221211. The reversal of 1011101221200 is 21221011101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8539000 + ... + 8656599.

Almost surely, 2^{1011101221200} is an apocalyptic number.

1011101221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011101221200 is an abundant number, since it is smaller than the sum of its proper divisors (2756592303600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011101221200 is a wasteful number, since it uses less digits than its factorization.

1011101221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17195634 (or 17195616 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1011101221200 its reverse (21221011101), we get a palindrome (1032322232301).

The spelling of 1011101221200 in words is "one trillion, eleven billion, one hundred one million, two hundred twenty-one thousand, two hundred".